which of the following is an example of marginal thinking: 1. mark does not like brocolli so he refuses to eat any 2. jing loves shoes so much that she spends all of her money on shoes 3. sergio decides to play pokemon go less to study more to bring his grades up 4. brads mom takes away his cell pone until he brings his grades up
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3. is correct since Sergio is doing LESS studying - LESS is an incremantal change at the margin. Hope that helps! Dirk
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